{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F091RCT6J","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F091RCT6J","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F091RCT6J","factsUrl":"https://icboms.com/api/mcp/products/STM32F091RCT6J","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F0 series 32-bit ARM Cortex-M0 MCU, 48 MHz, 256 KB Flash, 32 KB RAM, 52 I/O, 64-LQFP, -40 to 85 °C.","salesMarkdown":"The STMicroelectronics STM32F091RCT6J is a 32-bit ARM Cortex-M0 microcontroller from the STM32F0 series, clocked at 48 MHz with 256 KB of Flash and 32 KB of RAM. The 48 MHz core is the entry-level speed tier for the Cortex-M0 architecture. It handles sensor polling, Modbus RTU frames, and simple control loops without a problem, but it will not sustain heavy DSP or high-speed data logging. The 256 KB Flash is generous for this class — enough for a bootloader plus a moderate application image — while the 32 KB RAM keeps the bill of materials lean for designs that do not need external memory. ## Where it fits — typical applications The 52 I/O lines are available in the 64-LQFP package.","metaTitle":"ST STM32F091RCT6J ARM Cortex-M0 MCU, 48 MHz, 256 KB Flash","metaDescription":"STMicroelectronics STM32F091RCT6J 32-bit ARM Cortex-M0 MCU, 48 MHz, 256 KB Flash, 32 KB RAM, 52 I/O, 64-LQFP, -40 to 85 °C. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"48MHz","Series":"STM32F0","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M0","Package / Case":"64-LQFP","Product Status":"Obsolete","Data Converters":"A/D 19x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32F091","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/eb815e3c1023a3c34c75039eeb7a4080.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F091RCT6J/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for STM32F091RCT6J?","answer":"ST has not published an official direct replacement for the STM32F091RCT6J. The STM32G0 series is the current mainstream Cortex-M0+ family, but pin compatibility is not guaranteed — a firmware and hardware migration review is needed."},{"question":"What are the specifications of STM32F091RCT6J?","answer":"The STM32F091RCT6J is a 32-bit ARM Cortex-M0 MCU running at 48 MHz, with 256 KB Flash, 32 KB RAM, 52 I/O, a 19-channel 12-bit ADC, dual 12-bit DAC, CAN, I²C, SPI, UART/USART, IrDA, LINbus, and DMA. It comes in a 64-LQFP package and operates from -40 to 85 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F091RCT6J","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F091RCT6J when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}